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Cytokeratin 19 (Catalog Number MAB3238, Clone: RCK108) staining of Squamous Cell Carcinoma. Tissue pretreated with Citrate, pH 6.0 plus Proteinase K ...
Cytokeratin 19 (Catalog Number MAB3238, Clone: RCK108) staining of Squamous Cell Carcinoma. Tissue pretreated with Citrate, pH 6.0 plus Proteinase K ...
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Anti-Cytokeratin 19, clone RCK108
| Species Reactivity | Key Applications | Host | Format | Antibody Type |
|---|---|---|---|---|
| H | FC, WB, IC, IH(P) | Mouse | Purified | Monoclonal Antibody |
Description:
Anti-Cytokeratin 19, clone RCK108
Trade Name:
Chemicon (Millipore)
Specificity:
Cytokeratin 19. MAB3238 reacts with glandular epithelial cells and most carcinomas. Does not react with hepatocytes and hepatocarcinoma
Immunogen:
Cytoskeletal preparation of T24 cells.
Clone:
RCK108
Isotype:
IgG1κ
Background Information:
Cytokeratins are a subfamily of intermediate filament proteins and are characterized by a remarkable biochemical diversity, represented in epithelial tissues by at least 20 different polypeptides. They range in molecular weight from between 40 kDa and 68 kDa and isoelectric pH between 4.9 - 7.8, The individual cytokeratin polypeptides are designated 1-20. The various epithelia in the human body usually express cytokeratins which are not only characteristic of the type of epithelium, but also related to the degree of maturation or differentiation within an epithelium. Cytokeratin subtype expression patterns are used to an increasing extent in the distinction of different types of epithelial malignancies.
Cytokeratin 19 (molecular mass 40 kD) is a marker of simple epithelia. Cytokeratin 19 has been found in mesothelial and mesothelioma cells, and in ovarian cysts, cystadenomas, and ovarian carcinomas. It has been shown to be present in the basal layer of non-keratinizing stratified squamous epithelia such as the oral cavity and the ectocervix. Cytokeratin 19 has also been found in adenocarcinomas of the lung and in tumor cells of pulmonary metastases.
It has been reported that cytokeratin 19 can be found in the ductal cells of normal pancreas and in pancreas cancers. It was found that ductal cells of normal pancreas express a number of cytokeratins including cytokeratin 19, whereas acinar cells of normal pancreas also express numerous cytokeratins but not cytokeratin 19. Thus it is determined that pancreas cancers consistently express certain cytokeratins including cytokeratin 19, as do normal ductal cells, which indicates that pancreas cancers may originate from normal ductal cells.
Cytokeratin 19 (molecular mass 40 kD) is a marker of simple epithelia. Cytokeratin 19 has been found in mesothelial and mesothelioma cells, and in ovarian cysts, cystadenomas, and ovarian carcinomas. It has been shown to be present in the basal layer of non-keratinizing stratified squamous epithelia such as the oral cavity and the ectocervix. Cytokeratin 19 has also been found in adenocarcinomas of the lung and in tumor cells of pulmonary metastases.
It has been reported that cytokeratin 19 can be found in the ductal cells of normal pancreas and in pancreas cancers. It was found that ductal cells of normal pancreas express a number of cytokeratins including cytokeratin 19, whereas acinar cells of normal pancreas also express numerous cytokeratins but not cytokeratin 19. Thus it is determined that pancreas cancers consistently express certain cytokeratins including cytokeratin 19, as do normal ductal cells, which indicates that pancreas cancers may originate from normal ductal cells.
Species Reactivity:
Human
Application Notes:
Western blot: 1:100-1:1,000; Recognizes a 40kDa band in reduced westerns
Immunohistochemistry: 1:100-1:200 on frozen and paraffin embedded tissue (after treatment with pepsin or trypsin) sections.
Immunocytochemistry: 1:100-1:200
Flow cytometry: 1:100-1:200.
Optimal working dilutions must be determined by the end user.
Immunohistochemistry: 1:100-1:200 on frozen and paraffin embedded tissue (after treatment with pepsin or trypsin) sections.
Immunocytochemistry: 1:100-1:200
Flow cytometry: 1:100-1:200.
Optimal working dilutions must be determined by the end user.
Presentation:
Liquid in buffer with 0.1% sodium azide.
Storage Conditions:
Maintain at -20°C in undiluted aliquots up to 6 months. Avoid repeated freeze/thaw cycles.
UniProt Number:
Entrez Gene Number:
Gene Symbol:
- KRT19
- Keratin-19
- K19
- CK19
- MGC15366
- K1CS
- Cytokeratin-19
- CK-19
Usage Statement:
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
Key Applications:
- Flow Cytometry
- Western Blotting
- Immunocytochemistry
- Immunohistochemistry (Paraffin)
Entrez Gene Summary:
The protein encoded by this gene is a member of the keratin family. The keratins are intermediate filament proteins responsible for the structural integrity of epithelial cells and are subdivided into cytokeratins and hair keratins. The type I cytokeratins consist of acidic proteins which are arranged in pairs of heterotypic keratin chains. Unlike its related family members, this smallest known acidic cytokeratin is not paired with a basic cytokeratin in epithelial cells. It is specifically expressed in the periderm, the transiently superficial layer that envelopes the developing epidermis. The type I cytokeratins are clustered in a region of chromosome 17q12-q21.
UniProt Summary:
FUNCTION: SwissProt: P08727 # Involved in the organization of myofibers. Together with KRT8, helps to link the contractile apparatus to dystrophin at the costameres of striated muscle.
SIZE: 400 amino acids; 44092 Da
SUBUNIT: Heterotetramer of two type I and two type II keratins. Interacts with PNN and the actin-binding domain of DMD. Interacts with HCV core protein.
TISSUE SPECIFICITY: Expressed in a defined zone of basal keratinocytes in the deep outer root sheath of hair follicles. Also observed in sweat gland and mammary gland ductal and secretory cells, bile ducts, gastrointestinal tract, bladder urothelium, oral epithelia, esophagus, ectocervical epithelium (at protein level). Expressed in epidermal basal cells, in nipple epidermis and a defined region of the hair follicle. Also seen in a subset of vascular wall cells in both the veins and artery of human umbilical cord, and in umbilical cord vascular smooth muscle. Observed in muscle fibers accumulating in the costameres of myoplasm at the sarcolemma in structures that contain dystrophin and spectrin.DEVELOPMENTAL STAGE: Present in hair follicles at all stages of development.
DOMAIN: SwissProt: P08727 This keratin differs from all other IF proteins in lacking the C-terminal tail domain.
SIMILARITY: Belongs to the intermediate filament family.
MISCELLANEOUS: There are two types of cytoskeletal and microfibrillar keratin: I (acidic; 40-55 kDa) and II (neutral to basic; 56-70 kDa).
SIZE: 400 amino acids; 44092 Da
SUBUNIT: Heterotetramer of two type I and two type II keratins. Interacts with PNN and the actin-binding domain of DMD. Interacts with HCV core protein.
TISSUE SPECIFICITY: Expressed in a defined zone of basal keratinocytes in the deep outer root sheath of hair follicles. Also observed in sweat gland and mammary gland ductal and secretory cells, bile ducts, gastrointestinal tract, bladder urothelium, oral epithelia, esophagus, ectocervical epithelium (at protein level). Expressed in epidermal basal cells, in nipple epidermis and a defined region of the hair follicle. Also seen in a subset of vascular wall cells in both the veins and artery of human umbilical cord, and in umbilical cord vascular smooth muscle. Observed in muscle fibers accumulating in the costameres of myoplasm at the sarcolemma in structures that contain dystrophin and spectrin.DEVELOPMENTAL STAGE: Present in hair follicles at all stages of development.
DOMAIN: SwissProt: P08727 This keratin differs from all other IF proteins in lacking the C-terminal tail domain.
SIMILARITY: Belongs to the intermediate filament family.
MISCELLANEOUS: There are two types of cytoskeletal and microfibrillar keratin: I (acidic; 40-55 kDa) and II (neutral to basic; 56-70 kDa).
Brand Family:
Chemicon
Product Name:
Anti-Cytokeratin 19, clone RCK108
Concentration:
1 mg/mL
Antibody Type:
Monoclonal Antibody
Qty/Pk:
100 µg
Format:
Purified
Host:
Mouse